Improved basket for grinding timz



i atea @sans at tif-f burg, inthe county Sylvania,

, thereof, reference being had `drawing,`making a part ofthis f plane in the line :d x,

bed.

are thus' ground down `by frictional Ltorm, on accountV ofthe di'iculty of holding the slab Y my invention, `I will proceed to describe its construction and-manner of use.

i desired number of tiles.

`'fastened on outside.

` running lengthwise of the frame."

Letters Patent No, 94,9;1'7,

reread RENiER-syor P iT'rsBUne, PENNSYLVANIA.

dated :September 2l, 1869.

Whgj IMpRo'vEb BASKET FORGRINDING TILE.v

`The YSchedule referred to these Letters Patent and making part of the same.

Teelt/whom it may conce/ra:

Be it known thatd, PETER O.'RENIERS,of Pittsof Allegheny, andl State of. Pennhave invented a new and useful Improvementin Basket for Grinding 4Tile and I do hereby declare the following to be a full, clear, and exact description to the accompanying specification, in whichv I Figure 1 is a plan view of my'improvement; Fig1ire2 isva side view thereof; p Figure 3 is a sectional view of one of' the sides of the-basket, asmade by a plane passing through it in Figure 4 is a like V g. 2; and

Figure 5`is a like view of the central or main .part of the basket, 4as made by a plane passing through it in the line y-y, iig. 2.

Like letters of 'reference indicate like parts in each.

The nature of myinvention consists in the constructionof` a basket for grinding the edges of marble or other stone,'tile,slabs, or` plates, whereby any desirable number of\then1 may be ground` at once, and toV any desired shape, by pioperlyyadjusting them in the basket and holding yiew of the same, as made by a By the mode heretofore "in use, such slabs or tile are ground one at a time, byvbeing held bythe workmen in .the proper position on the 'rubbing-bed, which i is revolved by steam: or other power, and the edges.

contact. This process is slow, and sometimes dificul't, especially inv grinding tile to'a pentagonal or other -thau a square or tile perfectly true on the rubbing-bed.

By my improvement, I adjust to any desired angle, or one to one angle and another to another, a number of slabs or tiles in abasket, so that when set on the rubbing-bed the edges to be ground will rest on the bed, when,by causing the bed to revolve, the slabs or tiles `will be ground on such edges to the desired angle.

To enable others' skilledinthe art to make and use a is a frame, strongly made of cast-iron or other suitable material, corresponding somewhat in construction to a flask forpmoulds, as used incest-ing. It may be of any desired size, or made to 'receive any As is shown in the drawing, it is made to hold fourtiles inside, andv two are to be `It is divided transversely by a diaphragm, a. 1n each end Itheu 4place a removable partition, l1,

them on the revolving rubbing grooves in the end pieces Through each partition b, or iu each side thereof,

at or about its centre, I insert a threaded screw, c, supporting it, if need be, ,against being driven out ot' placeby a jamfnut, c'.' y t Between the outer 'end of each screw and the side of the frame a, contiguous thereto, is leftspace enough for a pressing-block, d, and for the insertion between' the block .d and flame a, of the slab or tile f to be ground.

Pressure is applied tothe slaborvtile f, so as to hold it securely in any desired position, by a threaded nut, e, operating against the pressure-block d,o'r against a spring, e', of elliptic or other suitableform, the ends of which spring bear against the pressure-block d.

The spring e is punched at the middle, so as to pass over the screws c, and its ends are slotted, asat s, so as to admit guiding-pins s.

The partitions b and pressure-blocks d may rest on a ledge, g, in the bottom of the frame a, or be supported therein in other suitable manner.

IThe devices thus far described are designed chiefly for grinding` the edges of square or rectangular slabs.

For the purpose of grinding oii the corners, and

making tile of other'polygonal shape than square or s rectangular, I'attach, by headed screw-bolts n, to the outside of the frame @inclined restsm.

By the same screw-bolts a, place by nuts n', I attach the bars m'. The slabs or' tiles, the corners of which are to be ground, are inserted in the spaces between the bars m and the sides of the frame a, with their edges on the inclined rests m. Their corners will then project down below the frame a, so as torcome in contact with the rubbing-bed below, and by it be ground to the angle required.

The rests m are made thin, so that by turning 11p the nuts n the bars 'm'y may be pressed tightly against the tiles, and hold them securely in place.

In order that the rests m may be adjustable, Ir

make slots o in the frame a, through which the -bolts nfpass; also like slots oin the ends of the bars m', the slots in each case extending lengthwise .of the part in whichthey are made, as shown. It will 'then be observed that the inclined rests m can be adjusted fnrther apart or nearer together, so as to-be adapted to receiving diiierent sizes of 'tile or slab, and holding them so that'their corners may be ground oii to the desired angle. 4

`The inclined rests may also he slotted where the bolts pass through, if so desired, so vas to be adjusted v at diierent angles with reference to each other.

The basket, constructed as described, beinglled f with slabs or tile f, one or more between each pressurebe held against moving sideand holding them iu block d and the frame a., and alsoinside of each set of bars an., the basket is set on the revolving rubber-bed usually employed in grinding such articles, or may be applied to other devices constructed for a like purpose.

At the corners of the frame a are attached removable feet l, made of any suitable material.

The tile may either project below the lower ends of the'feet l, orbe eveil with them; in which latter case the feet Z will be ground off along with the projecting edges of the tile.

When the feet are ground down they can be easily and cheaply renewed.

The basket, with the tile, is held on the rubbing-bed as it revolves, and if desired, it may be shifted in position thereon from time to time, so that all the tile shall be brought into contact with the wet grit or pulverized particles ground off, and all the edges be ground uniformly.

When the gn'nding is finished the tile 'may be removed, ungronnd till putin, and the process continued.

If' one part of a tile or slab grinds faster than another, the adjustment of that tile in the basket may 'be changed, so that the whole edge shall be ground uniformly.

By the use of such a basket as described I perform the work more rapidly, better, and at less oost than by any of the devices heretofore in use. l

Vhat I claim as my invention, and desire to secure by Letters Patent, is

1. A tile-grinding basket, consisting of a frame, a, two or more pressure-blocks, d, and to each a nut, c', on a screw, c, and with or without an interposed spring, c, the parts specified being lso arranged as to hold the tile or slabs vertically while their edges are being ground, substantially as described.

2. The inclined rests m, adjustable as described, in combination with the frame a, bars m, and adjusting and holding-devices, for the purposes set forth.

In testimony whereof, I, the said PETER C. REN- IERS, have hereunto set my hand.

PETER C. RENIERS.

XVitness'es:

JOHN GnEMn, Trios. B. KERK. 

